Paper-machine.



P. R. THOM.

PAPER MACHINE.

APPLIUATION FILED 11110.14, 1911.

Patented Feb. 27, 1912.

2 SHBETS-SHEET l.

COLUMBIA PMNOGRAPH cn.. WASHINGTON, D. c.

P. R. THOM.

PAPER MACHINE.

APPLIOATION FILED DB0. 14, 1911.

1,018,850. Patented Feb.27,1912.

2 SHEETS-SHEET 2.

UNITED STATES PATENT oFFIoE.

PETER R. TCI-IOM, F APPLETON, WISCONSIN, ASSIGNOR 0F ONE-HALF TOKIMBERLY- CLARK COMPANY, OF NEENAI-I, WISCONSIN, A CORPORATION 0FWISCONSIN.

PAPERflVIACI-IINE.

To all whom t may concern: Be it known that I, PETER It. THoM, aresident of Appleton, in the county of Outagamie and State of Wisconsin,have invented certain new and useful Improvements in Paper-Machines, ofwhich the following is a full, clear', and precise speciiication. j

My invention relates to paper machines, and particularly to improvedmeans for more efliciently driving tube rolls over which the pulpcarrying belt travels.

My invention may be considered as an improvement over the constructionand arrangement disclosed in my Patent No. 971,645, dated October 4,1910. In the machine of this patent the tube rolls are each providedwith a driving pinion at one end engaged by the upper leg of a drivingchain belt, the belt being connected with the driving mechanism for thepulp carrying or Fourdrinier belt in such manner that the travel of thebelt and the peripheral speed of the tube rolls is equal. It has beenfound in practice that with this arrangement there is a tendency for thechain to rise to a height above the sprocket pinions so that it is noteffective and does not give constant speed of all the tube rolls.

The important object of this invention is, therefore, to provideadditional mechanism for preventing such disengagement of the drivingchain from the tube'roll driving pinion, and to provide such mechanismwhich is simple and which can be readily applied to existing machines,and which is also adjustable, the attachments being in the nature ofbrackets or frames which can be readily mounted on the supporting tableof the tube rolls, and each of which frames or brackets pivots an idlerwhich is adjusted into engagement with the top of the driving chain beltto maintain efficient engagement of the chain belt with the sprocketwheels.

My invention will be fully understood by reference to the accompanyingdrawings, in which- Figure 1 is a plan view of the front of a papermachine, showing the location of the idler supporting brackets. Fig. 2is a side elevational view of the mechanism shown in Fig. 1. Fig. 3 isan enlarged sectional view taken from plane 3 3, Fig. 1, and Fig. 4 isan enlarged sectional view taken from plane 4-4, Fig. 1.

Specification of Letters Patent.

Application filed December 14, 1911.

Patented Feb. 27, 1912.

Serial No. 665,599.

The main supporting `table for the ma- `i 'i table the main shaft 10 issuitably journaled t for supporting the main roll 11, about which passesthe pulp carrying or Fourdrinier belt 12, this belt passing over thetops ofthe tube rolls, as is well understood in the art.

One end of the main shaft 10 carries a transmission sprocket 13connected by belt 14 with a pinion 15 at the end of the shaft 8 of theadjacent tube roll, this shaftbeing extended to the outside of theadjacent table side for this purpose. J ust within the front side of thetable each of the tube roll shafts carries a sprocket pinion 16, and abelt chain 17 passes about these sprocket pinions, which are all in arow, as illustrated in Figs. 1 and 2. As shown in Fig. 2, an adjustableidler 18 may be provided on one of the legs 6 of the table for engagingthe lower leg of the chain belt 17 to regulate the tension thereof. Themain shaft 10 is driven by suitable mechanism which it is not necessaryto show, and the main roll 11 and the ,tube rolls will be drivensimultaneously, the gearing relations being such that the travel of thepulp carrying belt will be equal to the peripheral travel of the tuberolls, so that there will be no friction as the pulp carrying belttravels over the tube rolls. In order to relieve the end tube rolls fromstrains during starting of the machine, eXtra bearings 19 and 20 may beprovided for the shafts of these end tube rolls, and, as shown, thesebearings may be supported from a bar 21 suspended from the inner ends ofextensions 22 on the front side of the table. Also, as illustrated inFigs. 3 and 4, the tube roll shafts may be given intermediate support injournal blocks 23 supported on a bar 24 running lengthwise of the table.

In order to prevent the upper leg of the driving chain belt 17 fromrising above any of the sprocket pinions 16 I provide atsuitableintervals Vthe idlers 25 for engaging with the upper leg of the chainbelt to securely hold the chain belt in eiiicient driving relation withthe teeth of the sprocket pinions. As best indicated in Fig. 4, eachidler is pivoted on a pin 26 secured at the lower end of an arm 27adjustable verti cally in the end of a bracket 28 secured to ment are ofcourse possible Which would still come Within the scopev of myinvention, andI therefore claim the following:

1. VIn a paper machine, the combination ofapulp carrying belt, tuberolls over Which said belt travels, each tube roll having a belt pinion,au belt engaging said pinions for simultaneously driving said tuberolls, and means engaging said belt for maintaining engagement thereofwith said pinions.

2. In a paper machine, the combination of a pulp carrying belt, tuberolls mounted in a roW and over which said belt travels to be supportedthereby, a vdriving pinion for each roll, a belt passing around saidpinions for simultaneously rotating said pinions, means for driving saidvpulp carrying belt and said tube roll driving belt, and idlers disposedat intervals to maintain engagement of said tube driving belt With saidpinions.

3. In a paper machine, the combination of a main roll' and a pluralityof tube rolls mounted in a row, apulp carrying belt passing about saidmain roll and over said tube rolls, a shaft for each tube roll and asprocket pinion thereon, a chain passing over said sprocket pinions,driving mechanism for simultaneously driving said main roll and saidchain, and idlersV applied at intervals to engage with the top of saidchain to hold said chain in driving engagement With said sprocketpinions.

4. In a paper machine, the combination of a supporting table, ahorizontal rovv of tube rolls each having a supporting shaft journaledat the sides of the table and each shaft carrying a driving pinion, adriving belt passing about said pinions, means for driving said belt tocause simultaneous rotation of said tube rolls, supporting framesmount.- ed at intervals on said table, and an idler adjustably mountedineach of said frames to engage with said belt to hold said belt indriving` relation with said pinions.

5. In a paper machine, the combination of a supporting table, aplurality'of tube rolls mounted on shafts extending transversely of saidtable and pivoted between the sides thereof, a sprocket pinion on eachshaft, a chain belt having one leg passing over the tops of saidsprocket pinions, means for driving said chain belt to causesimultaneous rotation of said tube rolls, frames mounted at intervals onsaid table, an arm vertically adjustable in each frame, and an idlerpivoted to each arm to engage with the top of said chain belt tomaintain driving engagement of said chain belt With said sprocketpinions.

In Witness hereof, I hereunto subscribe my name this 11th day ofDecember, A. D.,

PETER R. THOM. Witnesses:

F. SENSENHEIMER, L. M. LACHMANN.

Copies'of Vthis patentV may be obtained for ve cents each. oy addressingthe Commissioner of Patents. Washington. D. C"

